如何才能让他们共享信息

如何才能让他们共享信息

本文介绍了我有两个div与AngularJS相同NG控制器,如何才能让他们共享信息?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我在我的html code两个不同的div标签引用在AngularJS同一个控制器。我怀疑的是,由于这些div都是没有嵌套他们每个人都有自己的控制器的实例,因此数据是在两个不同的。

 < D​​IV NG控制器=AlertCtrl>
< UL>
    <李NG重复=警戒警报中>
        < D​​IV CLASS =span4> {{alert.msg}}< / DIV>
    < /李>
< / UL>
< / DIV>
< D​​IV NG控制器=AlertCtrl>
<形式NG提交=addAlert()>
    <按钮式=提交级=BTN>添加警报< /按钮>
< /表及GT;
< / DIV>

我知道这很容易通过在第一个div按键是固定的​​,但我觉得这是一个非常干净和简单的例子来表达什么,我想要的目的。如果我们按下按钮,添加另一个目的是我们的警示阵列的变化会不会反映在第一个div。

 函数AlertCtrl($范围){$ scope.alerts = [{
    类型:'错误',
    味精:哦,糟糕!改变一些事情,并尝试重新提交。
},{
    类型:'成功',
    味精:干得好!你成功读取这个重要的警报消息。
}];$ scope.addAlert =功能(){
    $ scope.alerts.push({
        类型:'sucess',
        味精:另一个警报!
    });
};
}


解决方案

这是一个非常普遍的问题。看来,最好的办法是创建那么之间的服务/价值和份额。

  mod.service('yourService',函数(){
  this.sharedInfo =默认值;
});
功能AlertCtrl($范围,yourService){
  $ scope.changeSomething =功能(){
    yourService.sharedInfo ='从控制器之一另一个值';
  }  $ scope.getValue =功能(){
    返回yourService.sharedInfo;
  }
}
 < D​​IV NG控制器=AlertCtrl> {{的getValue()}}< / DIV>
< D​​IV NG控制器=AlertCtrl> {{的getValue()}}< / DIV>

I have two different div tags in my html code referencing the same controller in AngularJS. What I suspect is that since these divs aren't nested they each have their own instance of the controller, thus the data is different in both.

<div ng-controller="AlertCtrl">
<ul>
    <li ng-repeat="alert in alerts">
        <div class="span4">{{alert.msg}}</div>
    </li>
</ul>
</div>
<div ng-controller="AlertCtrl">
<form ng-submit="addAlert()">
    <button type="submit" class="btn">Add Alert</button>
</form>
</div>

I know this could easily be fixed by including the button in the first div but I feel this is a really clean and simple example to convey what I am trying to achieve. If we were to push the button and add another object to our alerts array the change will not be reflected in the first div.

function AlertCtrl($scope) {

$scope.alerts = [{
    type: 'error',
    msg: 'Oh snap! Change a few things up and try submitting again.'
}, {
    type: 'success',
    msg: 'Well done! You successfully read this important alert message.'
}];

$scope.addAlert = function() {
    $scope.alerts.push({
        type: 'sucess',
        msg: "Another alert!"
    });
};
}
解决方案

This is a very common question. Seems that the best way is to create a service/value and share between then.

mod.service('yourService', function() {
  this.sharedInfo= 'default value';
});


function AlertCtrl($scope, yourService) {
  $scope.changeSomething = function() {
    yourService.sharedInfo = 'another value from one of the controllers';
  }

  $scope.getValue = function() {
    return yourService.sharedInfo;
  }
}
<div ng-controller="AlertCtrl">{{getValue()}}</div>
<div ng-controller="AlertCtrl">{{getValue()}}</div>

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08-24 18:32